Home / 425,824.29-639,179.30-313,631.19

Finding the Fourth Proportional to 425,824.29, 639,179.30 and 313,631.19

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Solution

The fourth proportional to 425,824.29, 639,179.30 and 313,631.19 is: 470,772.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,824.29 : 639,179.30 = 313,631.19 : x
  2. Step 2: Convert to fraction form
    425,824.29/639,179.30 = 313,631.19/x
  3. Step 3: Cross multiply
    425,824.29x = 639,179.30 × 313,631.19
  4. Step 4: Simplify right side
    425,824.29x = 200,466,565,266.45
  5. Step 5: Solve for x
    x = 200,466,565,266.45/425,824.29
  6. Step 6: Final answer
    x = 470,772.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.